Sprayer for printed sheets



May', 1937. G. E. HIEBER SPRAYER FOR PRINTED SHEETS Filed Deo, 7, 1934 SLL/////////// Patented May 4, 1937 NUNITED STATES PATENT OFFICE 2,979,287 SPRAYER FOR PRINTED SHEETS George E. Hiebencincinnati, ohio, assignor, By

mesne assignments, to The Sprayomatc Products Company, Cincinnati, Ohio, a corporation of Ohio Application December 7, 1934, Serial No. 756,497

1 Claim.

ing device, capable of being controlled by any movable member on a printing press which is synchronized with the sheet moving mechanism.

Another object of the invention is to provide an automatic sprayer which will operate satisfactorily when a relatively quickly solidifying substance is used as the spraying uid.

A further object of the invention is to provide a spraying means of low initial cost and economical operation and adaptable to all types of printmg presses.

Referring to the drawing:

Fig. 1 is a detail view of the delivery end of a printing press showing my invention adjacent thereto.

Fig. 2 is a side elevational view of my invention.

F Fig. 3 is a sectional view taken on line 3-3 of My invention is most desirable in the art at the present time. 'I'his is due in part to the elaborate apparatus, deemed necessary, to accomplish an otherwise simple process, to the large initial cost of conventional devices and to a general belief that spraying fluids should necessarily be liquid under heat and solid at lower temperatures to secure the best spraying results. My invention seeks to remedy these deficiencies by introducing a device which is of comparatively simple construction and of low initial cost with the added features of adaptability and adjustability to all types of presses. My device may also employ a great variety of suitable spraying iiuids without impairing its operating eiiiciency.

The embodiment of my invention consists or an enclosed electric switch 6 suitably mounted on the delivery end of a printing press 1 in such position asl to be actuated by a lever arm 8 comprising a part of the sheet moving mechanism. For the purpose of illustration the sheet moving mechanism consists of a driven cam 9 which imparts longitudinal reciprocating movement to a sheet moving shaft I0 by means of suitably pivoted drive shafts II and I2.

'Ihe switch 6 is enclosed in a box I3 whichcontains an opening to receive an electric commercial socket I.4 and also a slot I5 to allow longitudinal movement of an arm I6. The arm is plvoted on a shaft I1 positioned on one vertical wall of the switch box. A mercury tube I8 suitably mounted on the arm is employed to close contacts I9 and 29 of the two circuit leads 2I and 22 when the arm is in a relatively vertical position. 1 After each actuation a. spring 23 engaging the arm returns the switch mechanism to an open position. An insulated current-carrying line 24 associates the switch with a solenoid 25. The current is introduced through a plug 26 connected in series to the line 24. A plug 21 and socket 28 supported upon the solenoid by braces 29 and 30 conducts the current to the solenoid through leads 3| ,and 32.

The solenoid 25 and spray gun 33 rest upon a base 34. A rectangular box-like casing 35. plvotally mounted upon the base by hinge 36, permits easy accessibility to the operating parts. The casing contains an opening 31 in its top face to allow for the electrical plug and socket communication. Another opening 38 in the front face of the casing is of suicient size as to permit a clearance of the protruding spray nozzle 6I when the casing is swung open about hinge 36. A lock 40 positioned on the base securely clamps the casing in a closed position.

A stand 4I and a telescoping pipe member 42 supports the spraying mechanism at any desired height.

The spray gun may be any suitable type in general use. It is mounted upon the base by two angle bars 43 and 44. The angle bars 45 and 44 comprising the support for the swivel'joint' 4l are fastened upon the bottom of the base.

Air under pressure enters the air valve chamber of the spray gun by hose connection 48 which also communicates with a compressed air machine (not shown) by hose 49. A T elbow carries air from the air line to the surface of the spraying iiuid contained inthe reservoir 50 thus forcing the fluid through hose 5I to the fluid valve needle 52 in the spray gun. A trigger 53 pivotally mounted in the spray gun simultaneously controls the air needle 54 and the fluid needle 52 within the gun. The trigger is associated with the solenoid plunger 55 by means of a pivotally mounted link 56 which acts through a recess 54 in the gun handle. The link is taperedinto a slotted bolt 51 to receive the trigger, and nuts 58 are employed to adjust the trigger and plunger action.

From the above description it will be seen that the switch may be actuated by any movable member on the press which is synchronized with the sheet moving mechanism. The gun itself may be adjusted to direct a spray in any desired direction and as shown in Fig. 1 is adjacent the stacking mechanism 59 adjusted to direct spray upon newly printed sheets as they are stacked. `Any suitable uid which possesses a quickly 5' solidifying quality such as a mixture of'alcohol, water, dextrine and salicylic acid may be used in conjunction with my apparatus.

What I claim is: In combination with a printing press having a 10 dischargeend, means for .receiving and stacking individual sheets of work printed by the press and means movable back and forth for ytransferring printed sheets from the discharge end of the press to the receiving and stacking means, of an elec- 15 trical circuit controlling means disposed in the path of movement of said back and forth moving means of thepress, whereby said circuit controlling means is actuated in timed relation with the discharge yof printed sheets from the press for Y 20 alternately opening and closing an electrical circuit, a base independent from and disconnected from said press and positioned adjacent to the discharge end of the press, an electrically operable spray device disposed upon the base to discharge a spray of quickly drying fluid substance over sheets as the sheets are moved from the discharge end of the press to the receiving and stacking means, and a source of electrical energy in electrical connection with` said circuit controlling means and said electrically operable spray device, whereby upon opening and closing of a circuit including said source of electrical energy, said'circuit controlling device and said electrically operated spray device, the spray device is rendered operative and inoperative in alternate sequence for spraying printed sheets vduring the period of transfer only of said sheets to said sheet receiving and stacking means. 

